<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<style type="text/css">
			*{
				margin: 0;
				padding: 0;
			}
			.test{
				width: 200px;
				height: 20px;
				background: red;
				position: relative;
			}
			.test span{
				position: absolute;
				width: 20px;
				height: 20px;
				background: skyblue;
				left: 100%;
			}
		</style>
	</head>
	<body>
		<div class="test">
			<span></span>
		</div>
	</body>
</html>
